Callahan

Role, aliases, and summary hidden by structure-only view.

Mathematician at Berkeley

A peer Renee corresponds with who reviews her work and recognizes its fundamental, disturbing implications.

In Division by Zero (Ted Chiang, 2002)

Possibly the same character

Same author, same name, in other works — cross-work identity is not asserted here, only suggested. Nartopo tracks character identity per work; these are separate pages that may or may not depict the same character.

Callahan in Stories of Your Life and Others (2002)